As a result of the 1855 election in Kansas

Proslavery Missourians crossed into Kansas and helped elect a proslavery territorial legislature in 1855, amid widespread fraud. Free-state settlers rejected that legislature’s authority and formed a rival government, eventually drafting the Topeka Constitution; proslavery leaders later drafted the Lecompton Constitution. Thus, the two sides advanced competing governments and constitutions, as described in choice B.

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